Table 1 Papers obtained from PubMed search using search terms “saliva”, “markers” and “occupation” classified according to the field of application in occupational and environmental medicine and type of biomarker.

Field of application	Type of marker	Reference number of retrieved paper
Stress	Cortisol	4,5,6,7,8,9
	Immunoglobulin A	6
	Chromogranin A	6
Immunity	Immunoglobulin A	10,11
	Lysozyme	10,11
Smoking	Cotinine	12,13
Lead toxicity	Lead	14